MESON Chess Problem Database

Problem Display
PID: 109456 (Q6B/8/8/8/8/prR5/pk4K1/brn5 w - - 0 1)

Strzala, Kazimierz

Mazul MT, 2001

Q6B/8/8/8/8/prR5/pk4K1/brn5

#2

4 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qxa3#
    • 1...Rb5
      • 2.Qxa3#
    • 1...Rb6
      • 2.Qxa3#
    • 1...Rb7
      • 2.Qxa3#
    • 1...Rb8
      • 2.Qxa3#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Rc2#
        • 2.Qc2#
      • 1...Rb4
        • 2.Qc2#
      • 1...Rb5
        • 2.Qc2#
      • 1...Rb6
        • 2.Qc2#
      • 1...Rb7
        • 2.Qc2#
      • 1...Rb8
        • 2.Qc2#
      • 1...Sd3
        • 2.Qe2#
      • 1...Rxc3!
    • 1.Qd5?
      • threat
        • 2.Qd2#
      • 1...Sd3
        • 2.Qxb3#
      • 1...Rxc3!
    • 1.Qa4?
      • 1...Rb4
        • 2.Rc2#
        • 2.Rc4#
        • 2.Qc2#
        • 2.Qxa3#
      • 1...Rb5
        • 2.Rc2#
        • 2.Rc5#
        • 2.Qc2#
        • 2.Qxa3#
      • 1...Rb6
        • 2.Rc2#
        • 2.Rc6#
        • 2.Qc2#
        • 2.Qxa3#
      • 1...Rb7
        • 2.Rc2#
        • 2.Rc7#
        • 2.Qc2#
        • 2.Qxa3#
      • 1...Rb8
        • 2.Rc2#
        • 2.Rc8#
        • 2.Qc2#
        • 2.Qxa3#
      • 1...Se2
        • 2.Qxb3#
      • 1...Sd3
        • 2.Qxb3#
      • 1...Rxc3!
  • Keys
    • 1.Qf3!
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Rb4
        • 2.Rc4#
      • 1...Rb5
        • 2.Rc5#
      • 1...Rb6
        • 2.Rc6#
      • 1...Rb7
        • 2.Rc7#
      • 1...Rb8
        • 2.Rc8#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sd3
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::QAB1(C),XP(f)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);::QAR1(C)
        • S(c);N_GUARD::QAR(C)
      • Refutation
        • R(g);P_SPINR(g),XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • S(c);N_GUARD::QAR1(C),XR(g)
      • Refutation
        • R(g);P_SPINR(g),XR(B)
    • Try
      • Q(C);
      • Vars
        • S(c);N_GUARD::QAR1(C),XR(g)
      • Refutation
        • R(g);P_SPINR(g),XR(B)
  • Actual
    • Q(C);
    • Vars
      • R(g);OGATE,P_SPINR(g),XR(B)::QAB1(C),XR(g)
      • R(g);N_GUARD::B(D)+R(B)
      • S(c);N_GUARD::QAR(C),XS(c)
      • S(c);N_GUARD::QAR(C)
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